Bumper of a truck vehicle



FIG. 1 is a front perspective view of a bumper of a truck vehicle showing our new design;

FIG. 2 is a front and right side perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a right side elevation view thereof; and,

FIG. 5 is a top plan view thereof. 

The ornamental design for a bumper of a truck vehicle, as shown and described. 